Date Published: May 01, 2012
Publisher: International Union of Crystallography
Author(s): Thahira Begum S. A. Ravoof, Siti Aminah Omar, Mohamed Ibrahim Mohamed Tahir, Karen A. Crouse.
The asymmetric unit of the title compound, [Ni(C15H14N3S2)2], consists of two independent molecules with similar configurations. Each Ni2+ cation is coordinated in a cis-mode by two tridentate N,N′,S-chelating Schiff base ligands, creating a distorted octahedron [the smallest angle being 77.57 (7)° and the widest being 168.97 (7)° for one molecule, and 78.04 (7) and 167.55 (7)° for the second molecule]. The dihedral angle between the mean coordination planes of the two ligands is 86.76 (7)° for one and 89.99 (7)° for the second molecule. π–π interactions between neighbouring pyridine rings with plane-to-plane distances of 3.540 (1) and 3.704 (1) Å are observed.
For background to the coordination chemistry of hydrazine carbodithioates, see: Ravoof et al. (2010 ▶). For the synthesis, see: Ravoof et al. (2004 ▶). For related structures, see: Ali et al. (1997 ▶, 1999 ▶); Omar et al. (2012 ▶).